Effect
No effect on drought stress tolerance
No effect on nitrogen N use efficiency
No effect on produce quality
Phylgreen treated Hydrangea, cv. Phantom/Unique, grown in a peat-based substrate in reduced water and nitrogen conditions had on average 4.8 % shorter branches, the same amount of branches, 8.9 % less fresh weight, 10.1 % less dry weight (sign at -40%)), 2.8 % less root development, a 3.6 % higher chlorophyll-index a 4.9 % higher flavonol-index, a 1 % lower anthocyanin-index and a 7 % lower stomatal conductance (only determined at -40% reductions) compared to the controls grown in the same conditions.
Trial details
Indoor, greenhouse, peat-based substrate, drought conditions (20 % or 40 % less irrigation) and reduced nitrogen (-20 % or -40%)
Belgium
Crop
Hydrangea, Hydrangea paniculata
Trial application
Method
Foliar spray
Timing
Every 15 days
Rate
20 % reductions: 1.5 L/ha; 40 % reductions: 0.5 L/ha
2019-2020
Bio4safe trial report Hydrangea 2019-2020
Crop group
